Regular expression Date not less than today?

Question

PHP

The date format is like this after entering 03/12/2016
How can I check it that it would correspond to this format and the selected number was at least today's?

Answer 1

write what happens
and check "at least" only with a regexp or just a function?

Answer 2

The replace method takes a function as its second argument, so you can try to cheat.